http://www.v3.co.uk/v3-uk/news/2231503/google-shuns-windows-8-for-app-development
Google rules out Gmail and Drive apps for Windows 8
Google has revealed that it has no plans to develop dedicated apps for Windows 8 or Windows Phone 8 for its business app products such as Gmail or Drive.
Instead Bavor said the firm was committed to continually improving and updating its iOS and Android products.